420 lines
15 KiB
C
420 lines
15 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "shared-bindings/wifi/Radio.h"
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#include "shared-bindings/wifi/Network.h"
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#include <string.h>
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#include "common-hal/wifi/__init__.h"
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#include "shared/runtime/interrupt_char.h"
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#include "py/gc.h"
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#include "py/runtime.h"
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#include "shared-bindings/ipaddress/IPv4Address.h"
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#include "shared-bindings/wifi/ScannedNetworks.h"
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#include "shared-bindings/wifi/AuthMode.h"
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#include "shared-module/ipaddress/__init__.h"
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#include "components/esp_wifi/include/esp_wifi.h"
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#include "components/lwip/include/apps/ping/ping_sock.h"
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#define MAC_ADDRESS_LENGTH 6
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static void set_mode_station(wifi_radio_obj_t *self, bool state) {
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wifi_mode_t next_mode;
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if (state) {
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if (self->ap_mode) {
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next_mode = WIFI_MODE_APSTA;
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} else {
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next_mode = WIFI_MODE_STA;
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}
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} else {
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if (self->ap_mode) {
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next_mode = WIFI_MODE_AP;
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} else {
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next_mode = WIFI_MODE_NULL;
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}
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}
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esp_wifi_set_mode(next_mode);
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self->sta_mode = state;
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}
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static void set_mode_ap(wifi_radio_obj_t *self, bool state) {
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wifi_mode_t next_mode;
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if (state) {
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if (self->sta_mode) {
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next_mode = WIFI_MODE_APSTA;
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} else {
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next_mode = WIFI_MODE_AP;
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}
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} else {
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if (self->sta_mode) {
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next_mode = WIFI_MODE_STA;
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} else {
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next_mode = WIFI_MODE_NULL;
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}
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}
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esp_wifi_set_mode(next_mode);
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self->ap_mode = state;
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}
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bool common_hal_wifi_radio_get_enabled(wifi_radio_obj_t *self) {
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return self->started;
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}
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void common_hal_wifi_radio_set_enabled(wifi_radio_obj_t *self, bool enabled) {
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if (self->started && !enabled) {
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if (self->current_scan != NULL) {
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common_hal_wifi_radio_stop_scanning_networks(self);
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}
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ESP_ERROR_CHECK(esp_wifi_stop());
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self->started = false;
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return;
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}
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if (!self->started && enabled) {
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ESP_ERROR_CHECK(esp_wifi_start());
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self->started = true;
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return;
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}
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}
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mp_obj_t common_hal_wifi_radio_get_hostname(wifi_radio_obj_t *self) {
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const char *hostname = NULL;
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esp_netif_get_hostname(self->netif, &hostname);
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if (hostname == NULL) {
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return mp_const_none;
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}
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return mp_obj_new_str(hostname, strlen(hostname));
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}
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void common_hal_wifi_radio_set_hostname(wifi_radio_obj_t *self, const char *hostname) {
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esp_netif_set_hostname(self->netif, hostname);
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esp_netif_set_hostname(self->ap_netif, hostname);
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}
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mp_obj_t common_hal_wifi_radio_get_mac_address(wifi_radio_obj_t *self) {
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uint8_t mac[MAC_ADDRESS_LENGTH];
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esp_wifi_get_mac(ESP_IF_WIFI_STA, mac);
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return mp_obj_new_bytes(mac, MAC_ADDRESS_LENGTH);
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}
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void common_hal_wifi_radio_set_mac_address(wifi_radio_obj_t *self, const uint8_t *mac) {
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if (!self->sta_mode) {
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mp_raise_RuntimeError(translate("Interface must be started"));
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}
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if ((mac[0] & 0b1) == 0b1) {
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mp_raise_RuntimeError(translate("Invalid multicast MAC address"));
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}
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esp_wifi_set_mac(ESP_IF_WIFI_STA, mac);
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}
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mp_obj_t common_hal_wifi_radio_get_mac_address_ap(wifi_radio_obj_t *self) {
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uint8_t mac[MAC_ADDRESS_LENGTH];
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esp_wifi_get_mac(ESP_IF_WIFI_AP, mac);
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return mp_obj_new_bytes(mac, MAC_ADDRESS_LENGTH);
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}
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void common_hal_wifi_radio_set_mac_address_ap(wifi_radio_obj_t *self, const uint8_t *mac) {
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if (!self->ap_mode) {
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mp_raise_RuntimeError(translate("Interface must be started"));
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}
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if ((mac[0] & 0b1) == 0b1) {
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mp_raise_RuntimeError(translate("Invalid multicast MAC address"));
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}
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esp_wifi_set_mac(ESP_IF_WIFI_AP, mac);
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}
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mp_obj_t common_hal_wifi_radio_start_scanning_networks(wifi_radio_obj_t *self) {
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if (self->current_scan != NULL) {
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mp_raise_RuntimeError(translate("Already scanning for wifi networks"));
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}
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if (!common_hal_wifi_radio_get_enabled(self)) {
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mp_raise_RuntimeError(translate("wifi is not enabled"));
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}
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set_mode_station(self, true);
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wifi_scannednetworks_obj_t *scan = m_new_obj(wifi_scannednetworks_obj_t);
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scan->base.type = &wifi_scannednetworks_type;
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self->current_scan = scan;
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scan->start_channel = 1;
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scan->end_channel = 11;
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scan->radio_event_group = self->event_group_handle;
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wifi_scannednetworks_scan_next_channel(scan);
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return scan;
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}
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void common_hal_wifi_radio_stop_scanning_networks(wifi_radio_obj_t *self) {
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// Return early if self->current_scan is NULL to avoid hang
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if (self->current_scan == NULL) {
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return;
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}
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// Free the memory used to store the found aps.
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wifi_scannednetworks_deinit(self->current_scan);
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self->current_scan = NULL;
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}
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void common_hal_wifi_radio_start_station(wifi_radio_obj_t *self) {
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set_mode_station(self, true);
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}
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void common_hal_wifi_radio_stop_station(wifi_radio_obj_t *self) {
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set_mode_station(self, false);
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}
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void common_hal_wifi_radio_start_ap(wifi_radio_obj_t *self, uint8_t *ssid, size_t ssid_len, uint8_t *password, size_t password_len, uint8_t channel, uint8_t authmode) {
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set_mode_ap(self, true);
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switch (authmode) {
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case (1 << AUTHMODE_OPEN):
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authmode = WIFI_AUTH_OPEN;
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break;
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case ((1 << AUTHMODE_WPA) | (1 << AUTHMODE_PSK)):
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authmode = WIFI_AUTH_WPA_PSK;
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break;
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case ((1 << AUTHMODE_WPA2) | (1 << AUTHMODE_PSK)):
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authmode = WIFI_AUTH_WPA2_PSK;
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break;
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case ((1 << AUTHMODE_WPA) | (1 << AUTHMODE_WPA2) | (1 << AUTHMODE_PSK)):
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authmode = WIFI_AUTH_WPA_WPA2_PSK;
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break;
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default:
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mp_raise_ValueError(translate("Invalid AuthMode"));
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break;
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}
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wifi_config_t *config = &self->ap_config;
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memcpy(&config->ap.ssid, ssid, ssid_len);
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config->ap.ssid[ssid_len] = 0;
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memcpy(&config->ap.password, password, password_len);
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config->ap.password[password_len] = 0;
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config->ap.channel = channel;
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config->ap.authmode = authmode;
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config->ap.max_connection = 4; // kwarg?
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esp_wifi_set_config(WIFI_IF_AP, config);
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}
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void common_hal_wifi_radio_stop_ap(wifi_radio_obj_t *self) {
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set_mode_ap(self, false);
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}
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wifi_radio_error_t common_hal_wifi_radio_connect(wifi_radio_obj_t *self, uint8_t *ssid, size_t ssid_len, uint8_t *password, size_t password_len, uint8_t channel, mp_float_t timeout, uint8_t *bssid, size_t bssid_len) {
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if (!common_hal_wifi_radio_get_enabled(self)) {
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mp_raise_RuntimeError(translate("wifi is not enabled"));
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}
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EventBits_t bits;
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// can't block since both bits are false after wifi_init
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// both bits are true after an existing connection stops
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bits = xEventGroupWaitBits(self->event_group_handle,
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WIFI_CONNECTED_BIT | WIFI_DISCONNECTED_BIT,
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pdTRUE,
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pdTRUE,
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0);
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if (((bits & WIFI_CONNECTED_BIT) != 0) &&
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!((bits & WIFI_DISCONNECTED_BIT) != 0)) {
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return WIFI_RADIO_ERROR_NONE;
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}
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// explicitly clear bits since xEventGroupWaitBits may have timed out
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xEventGroupClearBits(self->event_group_handle, WIFI_CONNECTED_BIT);
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xEventGroupClearBits(self->event_group_handle, WIFI_DISCONNECTED_BIT);
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set_mode_station(self, true);
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wifi_config_t *config = &self->sta_config;
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memcpy(&config->sta.ssid, ssid, ssid_len);
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config->sta.ssid[ssid_len] = 0;
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memcpy(&config->sta.password, password, password_len);
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config->sta.password[password_len] = 0;
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config->sta.channel = channel;
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// From esp_wifi_types.h:
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// Generally, station_config.bssid_set needs to be 0; and it needs
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// to be 1 only when users need to check the MAC address of the AP
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if (bssid_len > 0) {
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memcpy(&config->sta.bssid, bssid, bssid_len);
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config->sta.bssid[bssid_len] = 0;
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config->sta.bssid_set = true;
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} else {
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config->sta.bssid_set = false;
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}
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// If channel is 0 (default/unset) and BSSID is not given, do a full scan instead of fast scan
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// This will ensure that the best AP in range is chosen automatically
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if ((config->sta.bssid_set == 0) && (config->sta.channel == 0)) {
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config->sta.scan_method = WIFI_ALL_CHANNEL_SCAN;
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} else {
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config->sta.scan_method = WIFI_FAST_SCAN;
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}
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esp_wifi_set_config(ESP_IF_WIFI_STA, config);
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self->starting_retries = 5;
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self->retries_left = 5;
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esp_wifi_connect();
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do {
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RUN_BACKGROUND_TASKS;
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bits = xEventGroupWaitBits(self->event_group_handle,
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WIFI_CONNECTED_BIT | WIFI_DISCONNECTED_BIT,
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pdTRUE,
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pdTRUE,
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0);
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} while ((bits & (WIFI_CONNECTED_BIT | WIFI_DISCONNECTED_BIT)) == 0 && !mp_hal_is_interrupted());
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if ((bits & WIFI_DISCONNECTED_BIT) != 0) {
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if (self->last_disconnect_reason == WIFI_REASON_AUTH_FAIL) {
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return WIFI_RADIO_ERROR_AUTH_FAIL;
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} else if (self->last_disconnect_reason == WIFI_REASON_NO_AP_FOUND) {
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return WIFI_RADIO_ERROR_NO_AP_FOUND;
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}
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return self->last_disconnect_reason;
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}
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return WIFI_RADIO_ERROR_NONE;
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}
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mp_obj_t common_hal_wifi_radio_get_ap_info(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->netif)) {
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return mp_const_none;
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}
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// Make sure the interface is in STA mode
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if (!self->sta_mode) {
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return mp_const_none;
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}
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wifi_network_obj_t *ap_info = m_new_obj(wifi_network_obj_t);
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ap_info->base.type = &wifi_network_type;
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// From esp_wifi.h, the possible return values (typos theirs):
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// ESP_OK: succeed
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// ESP_ERR_WIFI_CONN: The station interface don't initialized
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// ESP_ERR_WIFI_NOT_CONNECT: The station is in disconnect status
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if (esp_wifi_sta_get_ap_info(&self->ap_info.record) != ESP_OK) {
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return mp_const_none;
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} else {
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if (strlen(self->ap_info.record.country.cc) == 0) {
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// Workaround to fill country related information in ap_info until ESP-IDF carries a fix
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// esp_wifi_sta_get_ap_info does not appear to fill wifi_country_t (e.g. country.cc) details
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// (IDFGH-4437) #6267
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// Note: It is possible that Wi-Fi APs don't have a CC set, then even after this workaround
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// the element would remain empty.
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memset(&self->ap_info.record.country, 0, sizeof(wifi_country_t));
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if (esp_wifi_get_country(&self->ap_info.record.country) != ESP_OK) {
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return mp_const_none;
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}
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}
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memcpy(&ap_info->record, &self->ap_info.record, sizeof(wifi_ap_record_t));
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return MP_OBJ_FROM_PTR(ap_info);
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}
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}
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mp_obj_t common_hal_wifi_radio_get_ipv4_gateway(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->netif)) {
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return mp_const_none;
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}
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esp_netif_get_ip_info(self->netif, &self->ip_info);
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return common_hal_ipaddress_new_ipv4address(self->ip_info.gw.addr);
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}
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mp_obj_t common_hal_wifi_radio_get_ipv4_gateway_ap(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->ap_netif)) {
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return mp_const_none;
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}
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esp_netif_get_ip_info(self->ap_netif, &self->ap_ip_info);
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return common_hal_ipaddress_new_ipv4address(self->ap_ip_info.gw.addr);
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}
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mp_obj_t common_hal_wifi_radio_get_ipv4_subnet(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->netif)) {
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return mp_const_none;
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}
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esp_netif_get_ip_info(self->netif, &self->ip_info);
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return common_hal_ipaddress_new_ipv4address(self->ip_info.netmask.addr);
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}
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mp_obj_t common_hal_wifi_radio_get_ipv4_subnet_ap(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->ap_netif)) {
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return mp_const_none;
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}
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esp_netif_get_ip_info(self->ap_netif, &self->ap_ip_info);
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return common_hal_ipaddress_new_ipv4address(self->ap_ip_info.netmask.addr);
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}
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mp_obj_t common_hal_wifi_radio_get_ipv4_address(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->netif)) {
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return mp_const_none;
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}
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esp_netif_get_ip_info(self->netif, &self->ip_info);
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return common_hal_ipaddress_new_ipv4address(self->ip_info.ip.addr);
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}
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mp_obj_t common_hal_wifi_radio_get_ipv4_address_ap(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->ap_netif)) {
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return mp_const_none;
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}
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esp_netif_get_ip_info(self->ap_netif, &self->ap_ip_info);
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return common_hal_ipaddress_new_ipv4address(self->ap_ip_info.ip.addr);
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}
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mp_obj_t common_hal_wifi_radio_get_ipv4_dns(wifi_radio_obj_t *self) {
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if (!esp_netif_is_netif_up(self->netif)) {
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return mp_const_none;
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}
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esp_netif_get_dns_info(self->netif, ESP_NETIF_DNS_MAIN, &self->dns_info);
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// dns_info is of type esp_netif_dns_info_t, which is just ever so slightly
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// different than esp_netif_ip_info_t used for
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// common_hal_wifi_radio_get_ipv4_address (includes both ipv4 and 6),
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// so some extra jumping is required to get to the actual address
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return common_hal_ipaddress_new_ipv4address(self->dns_info.ip.u_addr.ip4.addr);
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}
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mp_int_t common_hal_wifi_radio_ping(wifi_radio_obj_t *self, mp_obj_t ip_address, mp_float_t timeout) {
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esp_ping_config_t ping_config = ESP_PING_DEFAULT_CONFIG();
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ipaddress_ipaddress_to_esp_idf(ip_address, &ping_config.target_addr);
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ping_config.count = 1;
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size_t timeout_ms = timeout * 1000;
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esp_ping_handle_t ping;
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esp_ping_new_session(&ping_config, NULL, &ping);
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esp_ping_start(ping);
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uint32_t received = 0;
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uint32_t total_time_ms = 0;
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while (received == 0 && total_time_ms < timeout_ms && !mp_hal_is_interrupted()) {
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RUN_BACKGROUND_TASKS;
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esp_ping_get_profile(ping, ESP_PING_PROF_DURATION, &total_time_ms, sizeof(total_time_ms));
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esp_ping_get_profile(ping, ESP_PING_PROF_REPLY, &received, sizeof(received));
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}
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uint32_t elapsed_time = 0xffffffff;
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if (received > 0) {
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esp_ping_get_profile(ping, ESP_PING_PROF_TIMEGAP, &elapsed_time, sizeof(elapsed_time));
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}
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esp_ping_delete_session(ping);
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return elapsed_time;
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}
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void common_hal_wifi_radio_gc_collect(wifi_radio_obj_t *self) {
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// Only bother to scan the actual object references.
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gc_collect_ptr(self->current_scan);
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}
|